Causes

Experts believe that the cause of a Bartholin's cyst is a backup of fluid. Fluid may accumulate when the opening of the gland (duct) becomes obstructed, perhaps caused by infection or injury.

A Bartholin's cyst can become infected, forming an abscess. A number of bacteria may cause the infection, including Escherichia coli (E. coli) and bacteria that cause sexually transmitted infections such as gonorrhea and chlamydia.

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